[Derepente]

Add a quart and a half of oil, wait a minute. Start the engine. No matter what you do, the engine needs at least that much oil to be safe. In fact, I've been here before, and added 2 quarts.. since then, I know that if I get the oil engine light after one hard corner, I know I need to add at least half a quart if not more.
I would lean towards adding oil and starting the engine.